5.7 Joining busbars 103
5.7.1 DC busbars 104
5.7.2 Ground busbars 106
5.7.3 AC busbars between COU/TEU and LSU (5/7/9 MVA) 107
5.7.4 AC busbars between COU/TEU and LSU (14 MVA) 108
5.7.5 AC busbars between COU/TEU and ARU/INU 109
5.7.6 AC busbar joints - without disconnector 109
5.7.7 AC busbar joints - with motorized disconnector 110
5.8 Installing and removing air-to-air heat exchangers 112
5.8.1 Installing air-to-air heat exchangers 112
5.8.1.1 Installation 113
5.8.2 Removing air-to-air heat exchangers 117
5.8.2.1 Removing an air-to-air heat exchanger 118
5.8.2.2 Reinstalling an air-to-air heat exchanger 119
5.8.3 Installing the transformers of air-to-air heat exchangers 120
5.9 Installing the pressure relief vents 121
5.10 Attaching the sealing tapes 123
5.11 Installing the roof joints and the roof attachments 124
5.11.1 Installing roof joints 124
5.11.2 Installing roof attachments 125
6. Electrical installation 127
6.1 Safety 127
6.2 Cable requirements 128
6.2.1 Power cables 128
6.2.2 Auxiliary and control cables 128
6.2.3 Synchronization cables 128
6.3 Grounding the drive system 129
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